view target-utils/simtest/poll.c @ 924:d452188587b4

rvinterf: begin change to backslash escape output format Right now throughout the rvinterf suite, any time we emit output that is expected to be ASCII, but may contain non-printable garbage, we use 'cat -v' form of garbage character representation. Unfortunately, this transformation is lossy (can't be reversed 100% reliably in the user's wetware), hence we would like to migrate to C-style backslash escapes, including doubling of any already-present backslashes - this escape mechanism is lossless. Begin this change by converting the output of RV and L1 traces in rvinterf and rvtdump.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:10:50 +0000
parents d96ea6ae6aa5
children
line wrap: on
line source

#include <sys/types.h>
#include <strings.h>
#include "types.h"
#include "simregs.h"

extern int serial_in_poll();

int enable_poll;

void
poll_sim_rx()
{
	u32 drx;

	if (SIMREGS.stat & SIM_STAT_FEMPTY)
		return;
	drx = SIMREGS.drx & 0xFF;
	printf("%02X ", drx);
}

int
mygetchar()
{
	register int c;

	do {
		if (enable_poll)
			poll_sim_rx();
		c = serial_in_poll();
	}
	while (c < 0);
	return c;
}

void
cmd_poll(argbulk)
	char *argbulk;
{
	char *argv[2];

	if (parse_args(argbulk, 1, 1, argv, 0) < 0)
		return;
	if (!strcmp(argv[0], "on"))
		enable_poll = 1;
	else if (!strcmp(argv[0], "off"))
		enable_poll = 0;
	else
		printf("ERROR: \"on\" or \"off\" argument expected\n");
}